Lamp-burner



2' Sheets-Sheet 1.

(NoModeLj J. A. TATRO. LAMP BURNER.

No. 574,690. 0 PaItented'Jan. 5, 1897.

Fig.1. Fig. 2.

D 1) T T ff- 2 2 2 2 2 2 --X 2 Sheets-Sheet 2.

(No Model.)

J. A. TATRO; LAMP BURNER.

Patented Jan. 5, 1897.

m: norms PErcRs co, PHOTfi-l mm. wnnmcro UNITED STATES PATENT OFFICE.

JOSEPH ARNO TATRO, OF BEAVER FALLS, PENNSYLVANIA.

LAM P-BU RNER.

SPECIFICATION forming part of Letters Patent No. 574,690, dated January 5, 1897.

Application filed June 17, 1896. Serial No. 595,379. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH ARNO TATRO, a citizen of the United States, residing at Beaver Falls, in the county of Beaver and State of Pennsylvania, have invented certain new and useful Improvements in Lamp-Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to central-draft-lamp burners and its objects are to improve the means to enable that class of burners to be used in the cheaper grades of lamps, to adapt such a burner to any size of lamp, and to increase the safety and the brilliance of lowgrade lamps.

In the accompanying drawings, Figure l is a front elevation of the improved burner connected to a fount Fig. 2, a vertical cross-section with the burner in front position; Fig. 3, a top plan of the burner; Fig. 4, a crosssection on the line 00 as of Fig. 2; Fig. 5, a verti-' cal cross-section with the burner in side position; Fig. 6, a crosssection on the line y y of Fig. 5; Fig. 7 a cross-section on the line 2 .2 of

' said figure Fig. 8, a perspective of the central tube and its connected side tubes; Fig. 9, a bottom plan of said tubes.

A is the fount, and a the collar thereof.

B is a perforated chamber without top or bottom screwing into the fount-collar.

O is a gallery fitting by means of its rim 1) upon and over the chamber, to which it may be locked when in place by the familiar device of slot and pin or in any other suitable manner. This gallery is in form a large and shallow drum, but perforated around its circumference, as shown. The gallery carries the usual clasps D for the chimney, which will of course rest upon the top of the gallery.

E is the center tube, extending in position from above and through the gallery and then through the perforated chamber into the fount. The upper part of this tube is round, but after it enters the chamberit changes to an ellipse and in that form leaves the chamber and passes into the fount, and so continues to its end. This change of the tube from the round to the elliptical form enables the chamber B to be prolonged downward through the collar into the fount, forming a pair of tubes F, uniting at the bottom and there communicating with the center tube, but set off therefrom, so that a wick-space may be provided between the center and the side tubes. The side tubes are contoured to agree with the broad or side curves of the ellipse into which that part of the center tube is formed, and they are dimensioned so that their joint capacity shall fully equal the capacity of the center tube. A disk G closes in the bottoms of the side tubes and, with the inwardly-directed oifset c from the side tubes, forms a shallow reservoir H for reception and delivery of the airsupply.

I is a jacket, circular at top and elliptical atbottom, contained within and rising above the chamber B, inclosing the center tube, but leaving a wick-space between itself and the tube. It must be suitably slitted, as indicated in Fig. 2, for the passage of wick-raisers K, mounted and turning in the chamber B, these raisers being in all respects ordinary and calling for no further description. This jacket is closely joined onto the bottom of the gallery 0 as it passes upward through the bottom, making that bottom a tight cover for the chamber B below.

L is a spreader detachably and adjustably seated by radial arms d in and above the center tube, and M is a hollow open-ended cone fixed to and rising from the top of the gallery and inclosing the center tube and its jacket and reaching almost to the top thereof. This cone is closely joined onto the top of the gallery 0, making that top tight except where it opens into the cone.

N represents an ordinary tubular wick. (Shown in the drawings.) For a betterunderstanding of the device the operation will now be described.

The fount being assumed to have its supply of oil, the wick N is fitted upon the center tube E, between it and the jacket I and side tubes F, till it reaches the offset forming the junction of the center and side tubes. From this offset upward the wick is in contact with the oil-supply both between the side and center tubes and up along what may be called the ends or small curves of the ellipse of the center tube, around which ends the side tubes do not extend. Thus the wick is enabled to take up sufficient oil to feed the flame of the lamp. As the oil is carried up along the wick out of and beyond the fount it is protected against danger from flame and heat by the aforementioned jacket and is ignited only at the top of the wick, where its ignition is desired.

The air-supply for the center tube enterin g the perforated chamber B is drawn down the side tubes F into the reservoir H and then passes up the center tube E to the interior of the flame of the lamp. Any gas thrown off by the oil in the fount will pass up along the wick between the center tube and its jacket to the flame or should any escape through the wick-raiser slits in the jacket it will be caught by the continuously-operating aircurrent within the perforated chamber and carried down the side tubes. The outside of the flame is air-supplied by the perforated gallery, the cone M concentrating the air upon the flame.

By describing the tube E and the jacket I as round in their upper parts and elliptical in their lower parts it is not intended to confine the construction to a strict circle or ellipse, but to indicate that in relation to each other the form of the upper part is substantially circular and of the lower part substantially elliptical, wherefore in fabrication any immaterial departure from a true circle or ellipse is not to be taken as a departure from the invention.

Having thus described my invention, I claim the following:

1. The combination, in a centraldraft-lamp burner, of the perforated chamber; the perj forated gallery seated upon said chamber;

the hollow open cone rising from said gallery; the pair of communicating and oppositelyplaced tubes prolonged downward from, and from within the perforated chamber, formed near their bottom into an inwardly-directed offset and terminating at bottom in a tight disk; the partly-round, partly-elliptical tube rising centrally from the offset of the aforesaid pair of tubes to, through and above the aforesaid chamber, gallery and cone, and communicating at bottom with the aforesaid pair of tubes; and the jacket within and above the perforated chamber and perforated gallery, and loosely surrounding the aforesaid central tube to the top thereof; the whole combination constructed and arranged as hereinbefore described, for the purpose of supplying outward and inward draft to the flame of a tubular-wick lamp.

2. The combination, in acentral-draft-lamp burner, of the top-closed perforated chamber; the pair of communicating and oppositelyplaced tubes prolonged downward from and from within said chamber, formed near their bottom into an inwardly-directed offset and terminating at bottom in a tight disk; and the partly-round, partly-elliptical tube rising centrally from the offset of the aforesaid pair of tubes to, through and above the aforesaid perforated chamber and communicating at bottom with the aforesaid pair of tubes; the said combination constructed and arranged as hereinbefore described, for the purpose of supplying an inward draft to the flame of a tubular-wick lamp.

In testimony whereof I afiix my signature in presence of two witnesses.

JOSEPH ARNO TATRO.

Witnesses: l

J. A. SNYDER, C. O. CLOSE. 

